Article XVII. FURTHER NOTES ON MAMMALS FROM 

 NORTHWESTERN DURANGO. 



By J. A. ALLEN. 



Since my previous report on mammals collected by Mr. 

 J. H. Batty in northwestern Durango (see this Bulletin, 

 XIX, 1903, pp. 590-612), additional specimens have been re- 

 ceived from him, from the same general region, representing 

 additional localities and six additional species. The later 

 shipments raise the total number of specimens received from 

 this limited area (cf. 1. c., pp. 590, 591) to about 660, and the 

 number of species to 40. Considering the comparatively 

 small area traversed, and the arid nature of the country, this 

 large number of species indicates a quite varied fauna, and 

 shows that Mr. Batty made a thorough exploration of this 

 small tract of country, limited to the Sierra Madre and ad- 

 joining plains to the eastward. 



The new localities represented by the present material are 

 San Andres, Guanacevi, La Cienega, Cienega Corrales, and La 

 Boca, ranging in altitude from 3000 to 8000 feet. The species 

 additional to the previous list are indicated by an asterisk 

 prefixed to the name. 



1. Odocoileus battyi Allen. Four specimens, skins and 

 skulls, and 2 additional skulls, Guanacevi, September. 



2. Sciurus apache Allen. Three specimens, collected as 

 follows: San Andres (alt. 3000 ft.), i, Oct. 15; Cienega 

 Corrales (alt. 7000 ft.), 2, Nov. 9 and n. These are much 

 darker than May specimens, with the fulvous of the under- 

 parts deeper, and the tail fringed with deep fulvous instead 

 of pale fulvous or yellowish white, as in late May specimens 

 from the same general locality. 



* 3. Sciurus aberti phaeurus, subsp. nov. 



Type, No. 23821, ? ad., La Cienega (alt. 7500 ft.),, northwestern 

 Durango, Mexico, Nov. 4, 1903; coll. J. H. Batty. 



Similar to S. aberti durangi, but with the back gray, faintly suffused 



[205] 



